Antifreeze composition



um'rso STATES error.

JAMES ROBERT HAUL, 01? CHARLOTTE, NORTH CAROLINA.

ANTIFREEZE COIMPGSI LIONv No Drawing.

This invention relates to compositions known as anti-freeze compositions, and more particularly to such compositions adapted to be used in aqueous solution in the cooling into wide use for a number of reasons, among which may be noted, increased cost of the proposed,compositions, fire hazard; corrosihility, etc, depending on the type of composition suggested. 1

Among the objects and advantages of the present invention, therefore, is'the production of a composition that may be .used 1n place of water in such cooling systems, which composition will not corrode or attack metal or non-metal parts made of iron, steel, ruhher, etc, which composition will be simple and economical to manufacture, and yvhich may be readily transported at a minimum cost.

Other and further ob iects and advantages will appear from the more detailed description set forth below, it being understood 'how- 1 ever, that this more detailed description is given by way of illustration and not by way of limitation, sincefi various changes may be made therein by those skilled in the art ithout departing from. the scope and spirit. of this invention.

The materials entering" into the composition that has been found particularly desirable for-the purposes set forth herein, include an organic acid such tartaric acid, a salt of thiosulphuric acid such as its common sodlurn salt, known as hypo, and another metallic, salt such as calcium chloride. The particular compounds specified have been found to make a highly eiiicacious composition for use in automobile cooling systems.

The following specific example illustrates a dcsirahlecomposition for such use: Sodium thiosulphate (hypo) 1b., calcium chloride, 4 1b., tartaric acid, 1 teaspoonful, vvater. iv gallon. The ingredients are desirably pui= veriaed together and then added to the water.

If desired. however, the ingredients may be Application filed-February 17, 1927.

Serial No 169,141,

added successively to the Water or rant-u iiany other manner.

While the proportions set forth above have been given in order to illustrate the preferred composition, these proportions may be varied. The particular composition 'is however a desirable one in that when used in automobil cooling systems, not only is there no corrosio of metal parts nor attack of non-metal pants,

:but it is found that the solution in the pgopop tions indicated will not-freeze at temperatures ordinarily met with during the winter season.

The particular substances mentioned a relatively inexpensive, but equivalentmaterials may he used if desired. And further other substances may he added to the stateo composition, if desired, although the state? ingredients have been found to be satisfactory without additions,

For economical shipment, the i redierits other than the water content, ma ho pack; aged either in bull; or in cartons esigned i hold that quantity of the composition neces sary for a stated addition to a iver: quantity of Water, so that the user nee-d merely add the contents of a carton. to the rel-(paired amount of water. When so shipped. it is desirable to use water-proof packages in view of the highly deliquescent properties of calcium chloride.

Having thus set forth my invention, I

claim:

1. A comnosition adapted foruse in ant freeze solutions consisting of sodium thio'sulphate, 1b., calcium chloride, 1b., and tartaric acid, 1 teaspoonful.

2. A composition adapted-for .use in an antifreeze solution com risingsubstantiall equal arts of sodium 1: iosulphate and cal cium c loridc, and a relatively. small amount of tartaric acid.

3. An antifreeze composition consisting of the liquid formed by the combination of sub stantially equal parts of sodium thiosulphatc and calcium chloride, a' relatively small amount of tartaric acid, and water.

4. An antifreeze composition consisting of the liquid formed by the combinationv 0? sodium thiosulphate, 1b., calciumchloride, 4 lb, tartaric acid, 1 teaspoonful, and water, it gallon.

In testimony whereof I allix my signature.

5 ROBERT PAUL ion 

